Description Catalogue Number 103965 Replaces FX0260-1 Synonyms Iron vitriol Description Iron(II) sulfate heptahydrate Product Information CAS number 7782-63-0 Grade ACS,ISO,Reag. Ph Eur Hill Formula FeO₄S * 7H₂O Chemical formula FeSO₄ * 7H₂O Molar Mass 278.02 g/mol HS Code 2833 29 80 Applications Application Iron(II) sulfate heptahydrate for analysis EMSURE® ACS,ISO,Reag. Ph Eur. CAS 7782-63-0, EC Number 233-336-3, chemical formula FeSO₄ * 7H₂O. Physicochemical Information Density 1.89 g/cm3 (20 °C) Melting Point >60 °C Elimination of water of crystallisation pH value 3 - 4 (50 g/l, H₂O, 20 °C) Bulk density 600 kg/m3 Solubility 400 g/l Toxicological Information LD 50 oral LD50 Rat 319 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H302: Harmful if swallowed. H315: Causes skin irritation. H319: Causes serious eye irritation. Precautionary Statement(s) P302 + P352: IF ON SKIN: Wash with plenty of soap and water. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. RTECS NO8510000 Storage class 10 - 13 Other liquids and solids WGK WGK 1 slightly water endangering Disposal 14 Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535). Safety Information Hazard Symbols Harmful Categories of danger harmful, irritant R Phrase R 22-36/38 Harmful if swallowed.Irritating to eyes and skin. Storage and Shipping Information Storage Store at +15°C to +25°C. Specifications Assay (manganometric) 99.5 - 102.0 % Identity passes test Appearance of solution passes test Insoluble matter ≤ 0.01 % pH-value (5 %; water) 3.0 - 4.0 Chloride (Cl) ≤ 0.0005 % Phosphate (PO₄) ≤ 0.001 % Total nitrogen (N) ≤ 0.001 % Heavy metals as Pb ≤ 0.005 % As (Arsenic) ≤ 0.0002 % Ca (Calcium) ≤ 0.005 % Cr (Chromium) ≤ 0.005 % Cu (Copper) ≤ 0.001 % Fe III (Iron III) ≤ 0.02 % K (Potassium) ≤ 0.002 % Mg (Magnesium) ≤ 0.002 % Mn (Manganese) ≤ 0.05 % Na (Sodium) ≤ 0.02 % Ni (Nickel) ≤ 0.005 % Pb (Lead) ≤ 0.0005 % Zn (Zinc) ≤ 0.005 % Substance not precipitated by ammonium hydroxide ≤ 0.1 % Corresponds to ACS,ISO,Reag. Ph Eur